Present address: Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA.

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Multi-Mission Archive at Space Telescope Science Institute, in contract to NASA.

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... dimensions

Although we have discounted the statistical significance of a secondary dip in the phase curves, if they are real it could be interpreted as a dearth of overionized particles like C³⁺ in zones over the rotational poles. This would agree with uO02's expectations that the particles exert a feedback on the magnetic field and drag them away from zones of low angular momentum. Evidence for this avoidance would be visible only for rotating magnetic stars observed at low inclinations.

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... spheroid

Rather than an oblate spheroid, the circumstellar disk region could take on just as well a negative curvature, coming to a cusp at the equator. The important point in our picture is not the exact shape but that it be closed at the equator and have about the height and radii we determine.

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